Dr. Roland Olbricht
Roland contributes to OpenStreetMap since 2008, and always in his spare time. He is the author of the Overpass API. He is a mathematician who now works in software development, currently for ticketing in public transit.
Since now 10 years, the Overpass API allows to query the OpenStreetMap data. This is reason enough to show how OpenStreetMap and the Overpass API have changed over that timespan. I will present and overview over user statistics, technical challenges and all kinds of requests to me as the developer.